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Add Litex/Fomu port - #4

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@xobs xobs commented Feb 4, 2020

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This adds support for litex, and adds the Fomu board as an initial port.

In order to support valentyusb, tinyusb is also updated.

@xobs

xobs commented Feb 4, 2020

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Looks like upstream rearranged the tinyusb portable directory. Let me see how to fix that.

Also, what does this error mean?

/home/runner/work/circuitpython/circuitpython/ports/litex/hw/common.h:document isn't included in any toctree

The common.h is just some common, private accessor functions used to get CSRs working.

xobs added 2 commits February 4, 2020 10:33
This adds support for Litex, along with support for the Fomu FPGA board.

Signed-off-by: Sean Cross <[email protected]>
valentyusb support was added upstream to tinyusb.  This advances
this submodule so that we can use it with circuitpython.

Signed-off-by: Sean Cross <[email protected]>
The latest nrfx is required to use the latest tinyusb.

Signed-off-by: Sean Cross <[email protected]>
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xobs commented Feb 4, 2020

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In order to support valentyusb, we must pull a newer version of tinyusb.

The latest version of tinyusb changes a lot for both samd and nrf platforms, so I pulled a version from December.

However, even that version has nrf changes that are incompatible with circuitpython. And circuitpython appears to be incompatible now with https://github.com/adafruit/nrfx/

Therefore, this patch is waiting on nrf to get fixed. I've made an attempt to fix it myself, but adafruit looks like they've changed the API substantially, and I'm not comfortable making changes to e.g. the NVMC block without a board to test on.

@xobs xobs closed this Apr 1, 2020
tannewt pushed a commit that referenced this pull request May 12, 2020
tannewt pushed a commit that referenced this pull request May 27, 2020
tannewt pushed a commit that referenced this pull request Feb 13, 2021
tannewt pushed a commit that referenced this pull request May 3, 2021
tannewt pushed a commit that referenced this pull request Jun 24, 2021
asan considers that memcmp(p, q, N) is permitted to access N bytes at each
of p and q, even for values of p and q that have a difference earlier.
Accessing additional values is frequently done in practice, reading 4 or
more bytes from each input at a time for efficiency, so when completing
"non_exist<TAB>" in the repl, this causes a diagnostic:

    ==16938==ERROR: AddressSanitizer: global-buffer-overflow on
    address 0x555555cd8dc8 at pc 0x7ffff726457b bp 0x7fffffffda20 sp 0x7fff
    READ of size 9 at 0x555555cd8dc8 thread T0
        #0 0x7ffff726457a  (/usr/lib/x86_64-linux-gnu/libasan.so.5+0xb857a)
        #1 0x555555b0e82a in mp_repl_autocomplete ../../py/repl.c:301
        #2 0x555555c89585 in readline_process_char ../../lib/mp-readline/re
        #3 0x555555c8ac6e in readline ../../lib/mp-readline/readline.c:513
        #4 0x555555b8dcbd in do_repl /home/jepler/src/micropython/ports/uni
        #5 0x555555b90859 in main_ /home/jepler/src/micropython/ports/unix/
        #6 0x555555b90a3a in main /home/jepler/src/micropython/ports/unix/m
        #7 0x7ffff619a09a in __libc_start_main ../csu/libc-start.c:308
        #8 0x55555595fd69 in _start (/home/jepler/src/micropython/ports/uni

    0x555555cd8dc8 is located 0 bytes to the right of global variable
    'import_str' defined in '../../py/repl.c:285:23' (0x555555cd8dc0) of
    size 8
      'import_str' is ascii string 'import '

Signed-off-by: Jeff Epler <[email protected]>
tannewt pushed a commit that referenced this pull request Mar 21, 2023
Pull in the latest main branch from adafruit
tannewt pushed a commit that referenced this pull request Aug 14, 2026
usb_audio: allocate the mic scratch buffer from the port heap
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